The appearance of a white patch of skin on the face requires careful observation of the appearance of the white skin surface. If it is purely based on depigmentation of wetness, without any self-perceived symptoms, touching with hand and skin level, the edge color is obviously darker than the white spot consider it is vitiligo on the face, related to genetic factors, external stimulation. It is recommended to choose to use tacrolimus for treatment and also 308nm excimer laser. If the white patches that appear on the face have slight protrusions, there is a distinct roughness when touched with the hand, and you can see obvious small flakes on it consider it to be pityriasis alba. Related to the elements of worms or vitamins inside the stomach, it is recommended to supplement the multivitamin and observe a period of time will have an improvement effect. If the white skin on the face is secondary to facial dermatitis or folliculitis, consider it to be a simple pigment loss spot, pigment loss spot will gradually return over time, do not need to worry too much.